28450518818 has 8 divisors (see below), whose sum is σ = 42922459548. Its totient is φ = 14143032304.

The previous prime is 28450518809. The next prime is 28450518821. The reversal of 28450518818 is 81881505482.

It can be written as a sum of positive squares in 2 ways, for example, as 22011579769 + 6438939049 = 148363^2 + 80243^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41113121 + ... + 41113812.

Almost surely, 2^28450518818 is an apocalyptic number.

28450518818 is a deficient number, since it is larger than the sum of its proper divisors (14471940730).

28450518818 is a wasteful number, since it uses less digits than its factorization.

28450518818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82227108.

The product of its (nonzero) digits is 819200, while the sum is 50.

The spelling of 28450518818 in words is "twenty-eight billion, four hundred fifty million, five hundred eighteen thousand, eight hundred eighteen".